Liquid-soap dispenser



W. H. ROSE.

LIQUID SOAP DISPENSER. APPLICATION FILED OCT. 19. 192 0.

Patented 0m 4, 1921 f, tr tium-soar msriinsnn To all whom z' t mci'jconcemi 7 Be it known that WitmmrfigRosna citizen of the Unitedstatesand residing at Jersey City, Hudson county, State of New Jersey,have invented certain new and useful Improvements in Liquid-SoapDispens- 1 ers, ofywhichrthe following is aspecifieation; V i r Thepresent inventionjr elates to fluiddis-' pensers; particularly *todevices for dispens ingliquid soap, such as are .commonlyuse'd inhotelspoflice building's publi'cwash rooms and f en in privatedwellings.

" Thesedispensers usually"on1prise'a container' or receptacle forholding "acQ'n idQ erable quantity of soap, in liquidform and a Tmanually "operable pumping device. by. means j'of which small measuredquantities of liquid soap are withdrawn from the; container: anddischarged into the out-stretched hand of the operator. [A common-defectof dispensers of'this'class heretofore designed or suggested is that anobjectionable leakage of the-soap often occurs, this leakage being duein part to the nature ofjthe soap itself which will escape throughminuteopenings and'cracks which are not large enough to allow the escapeof water. When such leak- 1 age is detected itis, of course; necessarytoreplace the defective parts or'the parts which do not fitptogetherproperly, and

where'jpistons .spr ngs, and other metallic parts are utilized suchreplacement may be.

difiicultand may involve. a considerableex ejecting action; which willnot easily break" pense, as compared with the entire costof thedispenser. Leakage of soap in this 'manner renders the deviceunsightly.

g It is an object of the present invention to providea liquid soapdispenser having a pum ing devicewhich' is positive in'its 'down in use;and in which the component the container is' practically: eliminated;ren

V in anumber ofdifl'erent formsfa'nd several parts are of the simplestdesign,- enabling it to be made at a minimum cost thereby cut ting theexpense of original installation and reducing the cost of; maintenance.The pumping device is. "so designed. and C011- structed' alsojthatleakage of the soapffrom dering it necessary to replacethe parts onlywhen they are worn out through long continued use. The invention maybe'embodied modifications. thereofgwill be described in penser andbracketbeing broken away to specification of Letters Patent. t nt 0 134,1921, v Applicatio ni file'd October-1 19, -i920. serial 1w .'417,9e5'."7

this specification and illustarted 'in the accompanying drawings,inwhich,

PATENT (iF FIQ 5- WIL I M innosng-or JER EY cnrY, NEW. JE SEY.

igure lis aside elevation of a dispenser and its supporting bracket,parts ofthe disshow the pumping. mechanism; "Fig. 2 isfa sectiononlineQ-Q of Fig. 1;

3isa view similar to Fig l omitting to show portions. of the receptacleand bracket and illustrating a modified 'form of the pumping device;3 ij Fig. 4 isfa similar view but showing a third modification of thepumping device;

Figs. '5 and Gare top views of thevalves illustrated'in Figs. 3 and 41respectively;

.Fig. 7 is a bottom view of the soft rubber member illustrated in Figs.3 and 4; 1

-L i Fig. 8 is atop view of a modified 'form of cup-shaped rubber memberadapted to be used in place of that illustrated in Fig.1.

"Referringparticularly to Fig; 1 asupport 111g" bracket is indicated at10- andfa glassor. metal receptacle or container at i ll, this acontainer "having an externally threaded tubular neck portion 12 at itsbottom which screws into' the v correspondingly threaded upper 'end of apassageway 13 which extends vertically; through the outer end of thebracket. Immediately below the lower end i I i of neck 12th e passage,13 is provided: with an upwardly facing annular shoulder- 14:

and am e tween the neck l2 and'this annular s oulder aretwosoft rubbermembers 15 and "16. The lower member 15.is

disk-shaped with a central 1 aperture 15" which opens into a contractilerubber .tube 15" extending verticall downward,lthe wall thickness ofthis tube being greater on one side than on the other, for a purposehere inafter torbe fully explained.

The upper 'member. 16 has an annular peripheral portion and cup ordome-shaped central portion having a central aperture and one orfmoreinlet ports 7. ,A spindle 18 of -wood hard rubber, or other likematerial'extends downwardlythrough the container, "through thelcentralapertures in the rubber members 15 and 16, and through the contractiletube 15". A block'or diskli),

which mayfbe of cork or other, material is secured to this spindleimmediately above the V the member 16, this spindle having handle orknob 20 at its upperend by means i of which it maybe convenientlygrasped and vertically reciprocated. The upward move-a ment of thespindle is limited by a restrain ing member 21 which may have differentforms, .but is preferably a .cord or tape the 1 ends of which areclamped between the neck 12 of the container and the diskmember 16 a theintermediate portion passing over block 19, and being wrapped around thespindle shaped rubber member beneath it.and, when' this has beenpartially Iflattenedserves as a valve, closing the ports 17. Furtherdownward movement of the block creates pres-- sure within thepumpchamber, the walls 1 of which" are formed by the two rubberv members,and thevsoap' therein" is forced out between the wall of the contractiletube 15" and the spindle 18, the tube 15 immediately contracting afterthe pressure is re-- lieved, preventing any flow of fluid dueto gravityalone. When the knob or handle is released, the member 16isprings backto its formeri shape "and returns the spindle to its initial positionand the ports 17 are againjuncovered by the block, to permit theentrance of soap into "the mn chamber.-

Upon the return movement of the spindle and before ports 17 areuncovered by disk 19,

a suction may be created in the chamber which would tend to draw tube15', up-

is formed as has been before explained, with one sideconsiderablythicker than the other, the thick side being stifl enough tosuecessivelyresist theforce of the suction within the chamber while thethin side permits cated.

:the" tube to radially expand w llow the escape of fluid when the handlerecipro- Instead of the cup-shapedrubber member iv 16 having-a series ofperforations in its top,

a rubber member 16' may be used if desired whichhas an elongated slotv17 in its. top. This member operates exactly as does the "member 16,the slot 17 taking the place of the small openings 17 of that member.

In the modification illustrated in Fig. 3,

the disk member 15 is ofhard rubber or fiber, and the cup shaped softrubber mem ber 16 extends downwardly and'fit s closely within asimilarly shaped shell or casing 30 which forms part of the bracket '10.A non-return valve 19 controls the flow through an inlet port inthedisk, this valve having a short "stem 18 attached thereto whichextends through the outlettube at the bottom of the rubber memberlfi,Pressure is applied to the flexible wall of the pump'chamber by means ofa horizontal manually operable plunger 31- and the'liquid is ejectedbetween the stem '18 and theinner;

surface of the contractile rubber tube, V A third modificationisillustrated in Fig. 4. "Here the disk l5 -and the cup-shaped tegraltherewith,;. which a stem {extends through the contractile outlet tube.Pres;

sure is-applied, however, by meansofgaverf tic'ally moved tubular,member 32 which is adapted to be moved upwardly by the hand, of thevoperator untiljit contacts with and deflects the wallfof member 16",causing thereby the immediate closure of thefnont n v alve and the?creation of pressur i V V the pump'chamber which, as before, results inthe ejection-,offluid between the spindle and the inner wall of-thecontractile-outlet tube.

it will be obvious to those skilled in the art that the invention isnotr limited in scopeto those embodiments described. and-illus- Vtrated. 1'

Having thus described the inventionwhat: is claimed as new and.desiredto-be secured' by Letters'Patent is:

1. Thecombination with soap tank Other modification s may be of, adischarge device comprising a flexible;

pump chamber, having an inlet provided with a'non-returnvalve andaself-closing outlet, a stem connected to said non-return valve andextending through said outlet,

and-means forapplying pressure to; the wall wardly and into the chamber,but this tube of the pump chamber to ejectfluid from said outlet. I i

2. The combination with afl idseaptarik and a support therefor of1adischarge device comprising a, horizontally arranged l disk andaqcup-shaped."flexible member which, together withthe disk, incloses 1afrom sa1d outlet. 1

3, The combination with'a fluid-soap tank? having a circular dischargeorifice and a support therefor of a discharge device com PI g ahorizontally arranged dis'k cups-shaped flexible member 'below' the,disk

which, together with the 'disk,j incloses "a: pumpchamber, the edges"of, the ;diskfand flexible member being clamped between the edge of thedischarge orifice and support, said disk having an inlet aperturecontrolled by a non-returnvalve, and said'cup-shaped member having 'aself-closingfoutlet at manually operated to apply 'pressure to the 5cup-shaped flexiblemember to eject the fluid plunger for applying lowestpoint, and a horizontally movable shaped member to e ect fluid throughsaid outlet.

4. The combination with a fluid soap tank of a discharge devicecomprising a horizontally arranged disk having an inlet aperturecontrolled by a non-return valve, a cupshaped flexible member below thedisk having a'self-closing outlet aperture at its lowest point invertical alinement with the inlet aperture, said disk and memberinclosing a" pump chamber, a spindle secured to said valve and extendingthrough said outlet aperture, and means for applying pressure tosaidflexible member to eject fluid from said outlet.

5. The combination with a fluid soap tank of a discharge devicecomprisin a pump chamber with a flexible portion 0 soft rubber, saidchamber having an inlet provided with a non-return valve and having anoutlet aperture opening into a contractile tube,

a spindle extending through said tube and fitting closely the innersurface thereof, and

means for applying pressure to the flexible f pressure to the cup-' wallof the pump chamber to thereby expand said tube and eject fluid betweenthe tube and spindle.

6. The combination with a fluid soap tank of a discharge devicecomprising a pump chamber with a portion of soft rubber, saidchamber'having an inlet provided with a.

non return valve and having an outlet aperture opening into acontractile rubber tube one side of which is thicker and stiffer thanthe other, a spindle secured to the non-return valve and extendingthrough the tube and closely fitting the inner surface thereof,

and means for applying pressure to the flexible wall of the pump chamberto thereby stretch said tube and eject fluid betweenthe 7 tube andspindle.

7 The combination with a fluid soap tank of a discharge device includinga pump chamber having a flexible wall and a self closing outlet and arigid and non-compressible member extendingthrough said outlet andagainst which the edges of the outlet opening bear.

In testimony whereof I aflix my signature.

- WILLIAM H; ROSE.

